Glossary

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D3(also: D3.js, Data-Driven Documents)

A JavaScript library for producing dynamic, interactive data visualizations in web browsers using SVG, HTML, and CSS. D3 gives developers fine-grained control over visualization rendering but does not include built-in accessibility features, leaving developers responsible for…

Daltonization(also: Recolouring, Color Remapping)

Daltonization is a computational technique that modifies the colours in an image or on a screen to make them more distinguishable for people with colour vision deficiency (CVD). Named after John Dalton, who first described his own colour blindness in the 18th century,…

Dashboard Accessibility(also: Accessible Dashboards)

The practice of designing data dashboards — visual interfaces combining charts, key performance indicators, filtering widgets, and interactive data querying — so they are usable by people with disabilities, particularly screen reader users. Accessible dashboards require…

Data Comics(also: Visual Data Comics, Narrative Visualization)

An emerging genre of data visualization that presents complex information in a sequential, comic-like format with discrete panels that progressively reveal data and narrative. Data comics break down composite visualizations into smaller, digestible pieces that build upon each…

Data Physicalization(also: Physical Data Visualization)

The practice of representing data through physical, tangible objects rather than on-screen visualizations. Data physicalizations encode information in the shape, texture, size, weight, or other physical properties of objects, making data accessible through touch and spatial…

Data Sonification(also: Auditory Data Display, Sonified Data Visualization)

The systematic mapping of data values to non-speech audio parameters such as pitch, volume, rhythm, timbre, or spatial location to make datasets perceivable through hearing. Data sonification is a key accessibility technique for making charts, graphs, and other data…

Data Visualization(also: Data Viz, Information Visualization)

The graphical representation of data and information using visual elements such as charts, graphs, maps, and diagrams. While data visualization is a powerful tool for communicating patterns and insights, it presents significant accessibility barriers for people with visual…

Data Visualization Accessibility(also: Accessible Data Visualization, Chart Accessibility, Visualization Accessibility)

The practice of designing charts, graphs, diagrams, and other visual data representations so they are perceivable, operable, and understandable by people with disabilities, particularly those who are blind or have low vision. This includes providing meaningful alternative text,…

Data sonification(also: Auditory graph, Audio chart)

The representation of data values through non-speech audio, typically by mapping numerical values to auditory parameters such as pitch, volume, duration, or timbre. Data sonification makes charts and graphs accessible to blind and low-vision users by allowing them to perceive…

Dynamic Tactile Graphics(also: Interactive Tactile Graphics, Animated Tactile Graphics)

Tactile representations of visual information that can change, move, or respond to user interaction in real time, as opposed to traditional static tactile graphics which are fixed once produced. Dynamic tactile graphics can be created through shape displays with movable pins,…

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